Cadophora sabaouaesp. nov. andPhaeoacremoniumSpecies Associated with Petri Disease on Grapevine Propagation Material and Young Grapevines in Algeria

Abstract

A field survey conducted on asymptomatic grapevine propagation material from nurseries and symptomatic young grapevines throughout different regions of Algeria yielded a collection of 70 Phaeoacremonium-like isolates and three Cadophora-like isolates. Based on morphology and DNA sequence data of β-tubulin (tub2) and actin (act), five Phaeoacremonium species were identified including Phaeoacremonium minimum (22 isolates), P. venezuelense (19 isolates), P. parasiticum (17 isolates), P. australiense (8 isolates) and P. iranianum (4 isolates). The latter two species (P. australiense and P. iranianum) were reported for the first time in Algeria. Multi-locus phylogenetic analyses (ITS, tub2, tef1) and morphological features, allowed the description of the three isolates belonging to the genus Cadophora (WAMC34, WAMC117 and WAMC118) as a novel species, named Cadophora sabaouae sp. nov. Pathogenicity tests were conducted on grapevine cuttings cv. Cardinal. All the identified species were pathogenic on grapevine cuttings.

Connection matters: exploring the implications of scion–rootstock alignment in grafted grapevines

“…Cookson et al 2013, Canas et al 2015, Assunção et al 2016, 2019, Loupit and Cookson 2020, Tedesco et al 2020). Similarly, the role of the genetic background of the scion and the rootstock on the defence against pathogens has been increasingly studied highlighting variable resilience against pathogens within different combinations (Rego et al 2000, Aroca et al 2010, Agustí‐Brisach et al 2013, Mary et al 2017, Cui et al 2019, Aigoun‐Mouhous et al 2021). Nonetheless, there is barely any research aimed to evaluate the implications of graft quality, that is goodness of the connection, on the behaviour of grafted plants in the vineyard (Milien et al 2012).…”

Fungal species associated with grapevine trunk diseases in Washington wine grapes and California table grapes, with novelties in the genera Cadophora, Cytospora, and Sporocadus

“…Pathogenicity testing revealed they are both pathogenic to Vitis vinifera. In the multilocus phylogenetic analyses of a comprehensive dataset, including all currently known Cadophora species, all species were well-supported as independent phylogenetic lineages, except for two taxa: Cadophora vinaceae CBS 146263 (Chen et al, 2022), which clustered with strong support with the type isolate of Cadophora ferruginea CBS 146363, and Cadophora sabaouae (Aigoun-Mouhous et al, 2021), which was nested with strong support with the type isolate of Cadophora luteo-olivacea CBS 141.41. Cadophora vinaceae CBS 146263 was described as phylogenetically related to Cadophora ferruginea CBS 146363 with slight differences in culture growth rate and color, and 17 nucleotide differences in their TEF-1a sequences.…”

“…In these cases, sequences with high similarity from ex-type and non-type isolates were included for phylogenetic reference utilizing the BLASTn function in NCBI and extensive literature review. Accordingly, relevant reference sequences were retrieved from recent and comprehensive phylogenetic studies for isolates in the genus Cadophora [ (Travadon et al, 2015;Linnakoski et al, 2018;Walsh et al, 2018;Bien and Damm, 2020;Macia-Vicente et al, 2020;Aigoun-Mouhous et al, 2021;Chen et al, 2022;Koukol and Macia-Vicente, 2022); Supplementary Table 2], Cytospora [ (Lawrence et al, 2018a;Pan et al, 2020;Shang et al, 2020;Pan et al, 2021); v. 3.10 (Maddison and Maddison 2016).…”

Phytotoxic Metabolites Produced by Fungi Involved in Grapevine Trunk Diseases: Progress, Challenges, and Opportunities

“…Fungi involved in Esca complex disease include Phaeomoniella chlamydospora , 27 species of Phaeoacremonium , Pleurostoma richardsiae , and ten species of Cadophora ( Table 1 ) [ 4 , 38 , 42 , 43 , 44 ].…”